CN210636294U - Cable-stayed bridge of semi-floating truss type bridge tower - Google Patents
Cable-stayed bridge of semi-floating truss type bridge tower Download PDFInfo
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- CN210636294U CN210636294U CN201920834123.3U CN201920834123U CN210636294U CN 210636294 U CN210636294 U CN 210636294U CN 201920834123 U CN201920834123 U CN 201920834123U CN 210636294 U CN210636294 U CN 210636294U
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Abstract
The utility model discloses a cable-stay bridge of semi-floating truss-like pylon, including the limit mound of both sides and the pylon that is located the middle part, pylon middle part, limit mound upper end all are provided with the support, arrange the girder that directly bears the bridge floor load on the support, arrange many pairs of suspension cables between pylon, girder, pylon and girder separation. The utility model discloses a space truss-like pylon, the vertical size of pylon is great, has effectively reduced the basic cushion cap thickness in large-span bridge lower part and concrete square volume. The utility model discloses set up two rows of vertical supports on well bridge tower, reduced girder temperature deformation to effectively solved the difficult problem that the deformation is difficult to control that creeps of large-span concrete girder, be favorable to ride comfort and the comfort level that the bridge floor driving is especially high-speed railway driving. The utility model discloses do not establish fixing support, to laying jointless quality line and striding the railway bridge greatly, can effectively reduce the temperature span, avoid arranging track temperature regulator, reduce maintenance work load.
Description
Technical Field
The utility model belongs to bridge structures building field, concretely relates to cable-stay bridge of half superficial truss-like pylon.
Background
Along with the increase of the span of the beam bridge, extra auxiliary measures such as stay cables need to be taken to meet the structural stress requirement, but the temperature deformation of the girder is increased, if the prestressed concrete girder is adopted, creep deformation in the later period is difficult to control, the smoothness and comfort of the bridge deck running are influenced, and particularly the high-speed railway bridge with high requirement on the running smoothness is adopted.
Disclosure of Invention
The utility model discloses a solve the problem that prior art exists and propose, its purpose provides the cable-stay bridge of half superficial truss-like pylon.
The technical scheme of the utility model is that: the utility model provides a cable-stay bridge of semi-floating truss-like pylon, includes the limit mound of both sides and the pylon that is located the middle part, pylon middle part, limit mound upper end all are provided with the support, arrange the girder that directly bears the bridge floor load on the support, arrange many pairs of suspension cable between pylon, girder, the separation of pylon and girder.
The bridge tower is a truss type bridge tower with integrated tower pier and separated tower beam.
The bridge tower longitudinal bridge direction is in an A shape, and the bridge tower transverse bridge direction is in an H shape.
The supports are a longitudinal movable support and a bidirectional movable support, and two rows of supports are arranged in the longitudinal bridge direction in the bridge tower.
The longitudinal movable support is arranged on one side of the circuit, and the bidirectional movable support is arranged on the other side of the circuit.
The side piers, the bridge towers and the main beams form side spans, and the main beams and the bridge towers form midspans.
The main beam is a prestressed concrete box girder or a steel girder.
And a lower foundation is arranged below the side pier and the bridge tower, and the lower foundation is one of a pile foundation, an enlarged foundation and an open caisson foundation.
The midspan is one or more steps.
The utility model has the advantages as follows:
the utility model discloses a space truss-like pylon, the vertical size of pylon is great, has effectively reduced the cushion cap thickness and the concrete square volume of large-span bridge lower part basis, and novel structure, pleasing to the eye.
The utility model discloses a set up two rows of vertical supports on the bridge tower, reduced girder temperature deformation to effectively solved the difficult problem that the deformation is difficult to control that creeps of large-span concrete girder, be favorable to bridge floor driving especially high-speed railway driving ride comfort and comfort level.
The utility model discloses the full-bridge all adopts vertical movable support and two-way movable support, does not establish fixing support, to laying jointless quality line and striding the railway bridge greatly, can effectively reduce the temperature span, avoids arranging track temperature controller, reduces maintenance work load.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional layout of a mid-span tower of the present invention;
wherein:
1 lower foundation 2 bridge tower
3 side pier 4 support
5 main beam 6 stayed cable
7 side span and 8 middle span.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples:
as shown in figures 1-2, a cable-stayed bridge of semi-floating truss type bridge tower comprises side piers 3 at two sides and a bridge tower 2 located at the middle part, supports 4 are arranged at the middle part of the bridge tower 2 and the upper ends of the side piers 3, a main beam 5 directly bearing bridge deck load is arranged on each support 4, a plurality of pairs of stay cables 6 are arranged between the bridge tower 2 and the main beam 5, and the bridge tower 2 is separated from the main beam 5.
The bridge tower 2 is a truss type bridge tower with integrated tower piers and separated tower beams.
The bridge tower 2 is A-shaped in the longitudinal direction and H-shaped in the transverse direction.
The supports 4 are longitudinal movable supports and bidirectional movable supports, and two rows of supports 4 are arranged in the bridge tower 2 in the longitudinal bridge direction.
The longitudinal movable support is arranged on one side of the circuit, and the bidirectional movable support is arranged on the other side of the circuit.
The side piers 3, the bridge towers 2 and the main beams 5 form side spans 7, and the main beams 5 and the bridge towers 2 form middle spans 8.
The main beam 5 is a prestressed concrete box beam or a steel beam.
And a lower foundation 1 is arranged below the side pier 3 and the bridge tower 2, and the lower foundation 1 is one of a pile foundation, an enlarged foundation and an open caisson foundation.
The mid-span 8 is one or more steps.
The main beam between the side pier 3 and the bridge tower 2 is a side span 7, the side span 7 is 94.2m long, the main beam between the bridge tower 2 and the bridge tower 2 is a mid-span 8, and the mid-span 8 is 220m long.
The main beams 5 may be prestressed concrete beams or steel beams.
The midspan 8 of the main beam 5 can be one or more.
The height of the bridge tower 2 above the bridge floor is 35m, which is 1/6.3 of the midspan 8.
The utility model discloses a construction method as follows:
firstly, constructing a lower foundation 1, then constructing a bridge tower 2 and a side pier 3, then installing a support 4 and synchronously constructing a support upper segment of a main beam 5 by a tower beam, then symmetrically pouring other segments of the main beam 5 by hanging basket cantilevers and tensioning corresponding segment prestress and stay cables, then closing and tensioning a closed steel beam in the middle of the main beam 5, performing auxiliary construction on a rear bridge floor, and finally supplementing and tensioning the stay cables according to needs.
The utility model discloses a space truss-like pylon, the vertical size of pylon is great, has effectively reduced the cushion cap thickness and the concrete square volume of large-span bridge lower part basis, and novel structure, pleasing to the eye. Two rows of longitudinal supports are arranged on one bridge tower, so that the temperature deformation of the main beam is reduced, the problem that the creep deformation of the large-span concrete main beam is difficult to control is effectively solved, and the smoothness and the comfort of bridge deck traveling, particularly high-speed railway traveling are facilitated. Adopt half showy system, the full-bridge all adopts vertical movable support and two-way movable support, does not establish fixing support, to laying jointless track long-span railway bridge, can effectively reduce the temperature span, avoids arranging track temperature regulator, reduces maintenance work load.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (9)
1. The utility model provides a cable-stay bridge of semi-floating truss-like pylon, includes side mound (3) of both sides and pylon (2) that are located the middle part, its characterized in that: bridge tower (2) middle part, side mound (3) upper end all are provided with support (4), arrange girder (5) that directly bear the bridge floor load on support (4), arrange many pairs of suspension cable (6) between bridge tower (2), girder (5), separation of bridge tower (2) and girder (5).
2. The cable-stayed bridge of the semi-floating truss type bridge tower according to claim 1, wherein: the bridge tower (2) is a truss type bridge tower with integrated tower piers and separated tower beams.
3. The cable-stayed bridge of the semi-floating truss type bridge tower according to claim 1, wherein: the bridge tower (2) is A-shaped in the longitudinal bridge direction and H-shaped in the transverse bridge direction.
4. The cable-stayed bridge of the semi-floating truss type bridge tower as claimed in claim 3, wherein: the supports (4) are longitudinal movable supports and bidirectional movable supports, and two rows of supports (4) are arranged in the bridge tower (2) in the longitudinal bridge direction.
5. The cable-stayed bridge of the semi-floating truss type bridge tower as claimed in claim 4, wherein: the longitudinal movable support is arranged on one side of the circuit, and the bidirectional movable support is arranged on the other side of the circuit.
6. The cable-stayed bridge of the semi-floating truss type bridge tower according to claim 5, wherein: the side piers (3), the bridge towers (2) and the main beams (5) form side spans (7), and the main beams (5) and the bridge towers (2) form midspans (8).
7. The cable-stayed bridge of the semi-floating truss type bridge tower as claimed in claim 6, wherein: the main beam (5) is a prestressed concrete box beam or a steel beam.
8. The cable-stayed bridge of the semi-floating truss type bridge tower according to claim 7, wherein: a lower foundation (1) is arranged below the side pier (3) and the bridge tower (2), and the lower foundation (1) is one of a pile foundation, an enlarged foundation and an open caisson foundation.
9. The cable-stayed bridge of the semi-floating truss type bridge tower according to claim 8, wherein: the midspan (8) is one or more collapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920834123.3U CN210636294U (en) | 2019-06-04 | 2019-06-04 | Cable-stayed bridge of semi-floating truss type bridge tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920834123.3U CN210636294U (en) | 2019-06-04 | 2019-06-04 | Cable-stayed bridge of semi-floating truss type bridge tower |
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| CN210636294U true CN210636294U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920834123.3U Active CN210636294U (en) | 2019-06-04 | 2019-06-04 | Cable-stayed bridge of semi-floating truss type bridge tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130201A (en) * | 2019-06-04 | 2019-08-16 | 中国铁路设计集团有限公司 | A kind of half floats the cable-stayed bridge of truss-like bridge tower |
| CN112144372A (en) * | 2020-09-17 | 2020-12-29 | 中铁第五勘察设计院集团有限公司 | Short tower cable-stayed bridge |
-
2019
- 2019-06-04 CN CN201920834123.3U patent/CN210636294U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130201A (en) * | 2019-06-04 | 2019-08-16 | 中国铁路设计集团有限公司 | A kind of half floats the cable-stayed bridge of truss-like bridge tower |
| CN112144372A (en) * | 2020-09-17 | 2020-12-29 | 中铁第五勘察设计院集团有限公司 | Short tower cable-stayed bridge |
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